{"id":26352,"date":"2012-01-12T23:23:02","date_gmt":"2012-01-12T21:23:02","guid":{"rendered":"http:\/\/staging.sillon38.com\/?p=26352"},"modified":"2012-01-12T23:23:02","modified_gmt":"2012-01-12T21:23:02","slug":"edf-prepare-de-nouveaux-travaux-de-confortement-du-barrage-du-chambon","status":"publish","type":"post","link":"https:\/\/www.sillon38.com\/blog\/2012\/01\/12\/edf-prepare-de-nouveaux-travaux-de-confortement-du-barrage-du-chambon\/","title":{"rendered":"EDF pr\u00e9pare de nouveaux travaux de confortement du barrage du Chambon"},"content":{"rendered":"<p><span style=\"color: #000000;\">Dans le prolongement des travaux de confortement r\u00e9alis\u00e9s entre 1992 et 1997, EDF va renforcer la s\u00e9curit\u00e9 du barrage du Chambon par la r\u00e9alisation d\u2019une campagne de sciage et la pose de barres d\u2019ancrage horizontales. <\/span><\/p>\n<p><span style=\"color: #000000;\">EDF baissera temporairement le niveau de la retenue du lac de 1025m \u00e0 1010m\u00a0; cette baisse de cote permettra la r\u00e9alisation des travaux. Comme tous les grands barrages exploit\u00e9s par EDF, le barrage du Chambon fait l\u2019objet d\u2019une surveillance permanente. Les dispositifs d\u2019auscultation adapt\u00e9s aux sp\u00e9cificit\u00e9s de cet ouvrage permettent \u00e0 EDF de suivre r\u00e9guli\u00e8rement, en lien avec les services de l\u2019Etat, l\u2019\u00e9volution de sa structure. <\/span><\/p>\n<p><span style=\"color: #000000;\"> L\u2019observation du ph\u00e9nom\u00e8ne \u00ab\u00a0d\u2019alcali r\u00e9action\u00a0\u00bb qui entra\u00eene un gonflement du b\u00e9ton, a conduit EDF \u00e0 pr\u00e9voir une maintenance sp\u00e9cifique.\u00a0 Entre 1992 et 1997, huit traits de scie ont \u00e9t\u00e9 r\u00e9alis\u00e9s sur la partie sup\u00e9rieure de l\u2019ouvrage permettant de rel\u00e2cher les contraintes internes, et une membrane d\u2019\u00e9tanch\u00e9it\u00e9 a \u00e9t\u00e9 pos\u00e9e. Ces travaux d\u2019envergure, men\u00e9s par EDF avec le souci constant de maintenir le plus haut niveau de s\u00fbret\u00e9, ont permis de s\u00e9curiser la stabilit\u00e9 du barrage y compris en cas de s\u00e9isme. <\/span><\/p>\n<p><span style=\"color: #000000;\"><a href=\"http:\/\/staging.sillon38.com\/wp-content\/uploads\/2012\/01\/barrage-1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-26353\" title=\"barrage\" src=\"http:\/\/staging.sillon38.com\/wp-content\/uploads\/2012\/01\/barrage-1.png\" alt=\"barrage\" width=\"591\" height=\"464\" srcset=\"https:\/\/www.sillon38.com\/blog\/wp-content\/uploads\/2012\/01\/barrage-1.png 591w, https:\/\/www.sillon38.com\/blog\/wp-content\/uploads\/2012\/01\/barrage-1-300x236.png 300w\" sizes=\"auto, (max-width: 591px) 100vw, 591px\" \/><\/a><\/span><\/p>\n<p><span style=\"color: #000000;\">Afin de maintenir le bon \u00e9tat du barrage du Chambon dans la dur\u00e9e, et en accord avec les services de l\u2019Etat, EDF se pr\u00e9pare \u00e0 r\u00e9aliser de nouveaux sciages aux m\u00eames emplacements et \u00e0 installer environ 400 barres d\u2019ancrage horizontales au niveau de la partie sup\u00e9rieure du barrage d\u2019ici fin 2014. EDF va investir 32 millions d\u2019euros dans ces nouveaux travaux de confortement.<\/span><\/p>\n<p><span style=\"color: #000000;\"> <\/span><\/p>\n<p><span style=\"color: #000000;\"><a href=\"http:\/\/staging.sillon38.com\/wp-content\/uploads\/2012\/01\/barrage-1.png\"><\/a>Les modalit\u00e9s de remont\u00e9e du niveau de la retenue du lac seront d\u00e9finies ult\u00e9rieurement, apr\u00e8s les travaux et fourniture par EDF d\u2019\u00e9tudes compl\u00e9mentaires aux pouvoirs publics. EDF a inform\u00e9 et r\u00e9pondu aux questions des \u00e9lus locaux \u00e0 l\u2019occasion d\u2019une r\u00e9union organis\u00e9e en d\u00e9cembre dernier<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dans le prolongement des travaux de confortement r\u00e9alis\u00e9s entre 1992 et 1997, EDF va renforcer la s\u00e9curit\u00e9 du barrage du Chambon par la r\u00e9alisation d\u2019une campagne de sciage et la pose de barres d\u2019ancrage horizontales. <\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[85,34],"tags":[677,1964],"class_list":["post-26352","post","type-post","status-publish","format-standard","hentry","category-amenagement","category-hydraulique","tag-barrage-du-chambon","tag-edf"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ 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